rename 'System' to 'Firmware'

components/wifi-manager/index.html

@@ -38,7 +38,7 @@
                 <a class="nav-link" data-toggle="tab" href="#tab-nvs">NVS editor</a>
             </li>
             <li class="nav-item">
-                <a class="nav-link" data-toggle="tab" href="#tab-system">System</a>
+                <a class="nav-link" data-toggle="tab" href="#tab-system">Firmware</a>
             </li>
             <li class="nav-item">
                 <a class="nav-link" data-toggle="tab" href="#tab-credits">Credits</a>